Stored Procedure

Hi everyone.

I have a stored procedure which queries data from three tables named StockBfwd, ReceiptMonthly, IssueMonthly. it works very well only that when one table does not have the information that relates to the two, then no results are thrown. the stored procedure is shown here below.

SELECT DISTINCT Stock.StockId, Stock.PartNo, Stock.ItemName, Stock.Packaging1, Stock.Packaging2, Stock.Bin, StockBfwd.StockBfwd AS Bfwd,

Stock.UnitCost, Stock.UnitSell, Stock.SubCategoryId, SubCategory.SubCategoryName,

(SELECT SUM(ReceiptMonthly.StockIn) FROM ReceiptMonthly WHERE ReceiptMonthly.StockId=Stock.StockId) AS StockIn,

(SELECT SUM(IssueMonthly.StockOut) FROM IssueMonthly WHERE IssueMonthly.StockId=Stock.StockId) AS StockOut

FROM Stock LEFT OUTER JOIN

StockBfwd ON Stock.StockId = StockBfwd.StockID INNER JOIN

ReceiptMonthly ON Stock.StockId = ReceiptMonthly.StockId INNER JOIN

IssueMonthly ON Stock.StockId = IssueMonthly.StockId INNER JOIN

SubCategory ON Stock.SubCategoryId = SubCategory.SubCategoryId;

Thanks